Multiplying-back for cameras.



' W. '1". FOLMER. MULTIPLYING BACK FOR CAMERAS.

APPLICATION FILED JUNBG. 1910.

Patented Nov 26,1912.-

2 sums-sum 1.

l/viltwmw y) WW I M5 Elmer/new W. i FOLMER. A MULTIPLYING BACK FORCAMERAS APPLIOIATIOII TILED was s, 1910.

Patented Nov. 26,1912.

' UN TEnsTA s Par-anti" orator- WILLIAM FOLMER. OF ROCHESTER, NEW YORK,ASSIGNOR TO EASTMAN KODAK 00., OF ROCHESTER, NEW YORK, A CORPORATION OFNEW YORK.

MULTIPLYING-BACK FOR CAMERAS.

Specification of Letters Iatent.

Patented. Nov. 1912.

To all whom it may concern.

Be it known that I, WILLIAM F. Fominn,

of the city of Rochester, in the county of -Monroe and State of NewYork, have in-- vented certain new and useful Improve ments inl3[ult]plying-Backs-for Cameras;

- p and I do hereby declare the following to be a full, clear, and exact description of the same, reference being bad. to the accompanyingdrai'vings, forming a part of this speciiication, and to the referthereon.

My present invention rel-ates to photography and more particularly tophotographic cameras, and it has for its objectto provide an improvedcamera back for facilitating "the recording of a. plurality of views onthe same photographic plate or sensitized surface.

' able elements that opt means for regulating cording to the IIUIRlDGI"and size of the ex- The improvements the means for guidn' ire directed,in part to the relatively movate to bring different ed mediumsuccesportions of the sen sively into position i.

such movements a c.

posures.

To these and other ends the invention consists iii-certain improvements:1 combina- 'tions of parts all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at't-heendjof the specification.

In the drawings: Figure 1- is a rear elevation of a multiplying backconstructed in aocordance with and illustrating one embodimerit of myinvention; Fig, 2 is a top plan view thereof;Fig. 3 is a detailsect-iontaken.

substantially on. the line 3-3 of Fig.2; Fig. 4 is a vertical sectiontaken substantially. on

I the line'44 of Fig. 1; Fig.6 is a horizontal section takensubstantially on the line 5-5 of Fig; 1; Fig. 6 is a vertical sectiontaken substantially'on the line 6-'6' of Figf l, and Fig. 7 is a detailsection taken sub stantially on the line 77 of Fig. 1.

Similar. reference numerals throughout the several figures indicate thesame parts. My improvements are applicable andmay be used with equaladvantage when incorporated in backs both of the type that forms a..ce-numera'ls marked.

' exposure and to the ably formed, as. by the provision of iabbets 2, tocooperate with the correspondingly formed rear face of the camera boX(not shown). This frame preferably carries the. masking hood 3 fordetermining the size of the exposed area, which hood is held by huttons4 on a diaphragm 5 that is in turn held removably mounted-in the frameby buttons (3. The frame of the present. en'ihodimcnt of the inventionis substantially square, as shown. and adapted for a square c era boxwhereby it maybercversed or i s position easily changed with relationtl-zcrcto.

Carried on the supporting frame to move relatively thereto in twodirections is a fran'ie 7 to which is adapted to be appliedthe-sensitized medium and which may he inthis respect ofIa-ny desired co7 action. I n. the present-instance it con'ipriscsa focusing screen 8adapted to yield rearv lrdly on the connecting. springs 9 to recciva etit and its's upport the ordinary D1225. holder 10, such as,shown inFigs. t and The frame 7 is carried on the sup'p-orti frame 1 tlnj'oughthe medium of the. int mediate ween 5 frame 11 and the adjustment of theplate holding frame in two directions, before re-Y .ferred to, iseffected by having the frame '11 adjustable on the frame 1 in onedirection and theframe 7 in turn adjustabie on the .frame 11 inanotherdirection. The front face of the frame 11 is preferably provided with astrip of, pile fabric, or other suitable material, 12 to-prevent theadmission of light between the-two frames as frame 11 passes acrosstheadjacent emit-acting face of the frame 1, and the corresponding faceof the frame 7 is similarly fitted at 18 for .a similar 'purpose- I Themovements of the intermediate frame 11 on the supporting frame 1areguided and the two frames are held together by flange plates. 14 onthe frame 11 sliding in guides or grooves "1501 two opposite lateraledges of the frame 1, this movement bringing about-a vertical adjustmentof the sensitized medium with respect to the supporting frame of thecamera box according to the position of the device in Fig. 1' of thedrawings. To look the two frames men 0 tioned in' position for theexposure-of a given portion of the plate, one of the frames, I being thesupporting frame 1 in the present instance, has formed in its contactingface arecess 16 that forms a seat for a rod l'T 11 0 that is supportedthereby with its outer face flush with the face of the frame. This rodis preferably square in cross section, as shown in Fig. '2, but, at anyrate, has a plurality of faces any of which may be exposed on the faceof its'carrying frame by 'remov ing the rod and replacing it in itsseat. in another position. Each face has a series of ahutments '18formed, in the present instance, by recesses, and the abutments of eachseries are differently spaced longitudinally of the rod which latterextends in the direction of relative movement of the frames. i

A head 19 is formed on the outer end of the rod that project-sbeyond theframe to be readily accessible to the fingers of the op erator and justbeneath this head is a cutaway portion 20 extending-- circumferentiallyon all sides and into which is adapted to move (Fig. 7) the lockingflange 21 of a sliding bolt 22 mounted by means ofguide pins 23 on theframe 1, which bol secures the. rod in its seat.

Cooperating with the rod '17 is a spring catch 24 arranged in a recess25 in the adj a cent face of the intermediateframe and having a fingerportion 26. A stop pm 2'4 on the catch. engages the recesses or abut--ments 18 of the diiferent'seriesaccording to the position of the rod inits seat.

The plate holding frame 7 is uided. on the intermediate frame 11 in ahorizontal direction with respect to the position of Fig. 1 or at anangle, to the direction of adjustment just described and isheld inengagement therewith at one edge by a flange plate 28 cooperatingwith a.guiding groove 29 in the lower edge of the frame 11. The opposite orupper edge of the latter frame is provided with a guide strip 30 in rearof which the said frame is recessed to receive a flange 31 on thecorresponding edge of the frame 7 that engages on the under side of thestrip. The latter is also formed to pro- Videa projecting rib or flange39 which is received within a. groove or guide 33 in the adjacent faceof the frame 7 to support the weight of the latter, as well asperforming its guiding capacity, while the flange 31 holds the framestogether in intimate contact; Somewhat such devices are preferablyemployed for locking the frames 7 and 11 in their various positions ofadjustment as are utilized with respect to the frames 1 and 11 and theycomprise in the present instance a bar 34 (Figs. 2 and 3) like the bodyportion of the bar 17 and similarly provided on its various faces withabutments 35, the bar being partly held in a recess 86 in the top of theframe ll by lip 37 overhanging the same at one end; At the opposite endis arranged a kicker 38 compris alever having one arm 39 projecting fromthe frame and the other arm 40 arranged to rise beneath the bar anddislodge it laterally from its seat when it is desired to change itspositioirtherein for the purposes heretofore describedin connection withthe bar 17.

A spring arm 11 carried on the plate holding frame 7 constitutes aspring catch having a stop pin e2 cooperating with the abutments 35 ofthe rod 3 1, which arm overhangs the seat 36 in such manner as to reofthe parts is thought to be necessary here- 7 m. The sensitized mediumbeing held within the rear or-outer frame 7 and accessible through theintermediate frame 11 to the masking hood 3, the various adjustments-ofthe frame 7 on the frame 11 and of the lat teron the supporting frame 1by which the masking hood is carried, enables the image to be cast uponsuccessive adjacent areas of the photographic plate in both vertical andhorizontal 'roi's. "When the exposures are numerous they arecorrespondingly small, interchangeable hoods 3 of different sizes beingutilized and "the controlling members or rods 17 and 34 being set topresent. those series of abutments which will bring about,automatically, the proper number of halts in the relative movements ofthe frames to 3m erl s )ace the ex os'ures and et utilize economically,the surface of the sensitized medium.

I claim as my invention: I 1. In a multiplying back for cameras, thecombination with two relatively adjustable frames .having a position inrear of the camera, one of which is adapted to have apvided with aseries of abutmeuts spaced dii 1 ferently longitudinally of the memberfrom the aoutments on another face, a stop on the other framecoiiperating with the different series of abutments, selectively,according to theposition of the member in its seat. and

a sliding bolt engaging beneath the head of the member to lock it in itsseat.

2. In a multiplying back for cauu the combination with two relativelyadji a le frames having a position in. rear of the camera, one of whichi adapted to have applied thereto the sen ed medium, of a seat on one ofsaid frames, a removable member arranged in the seat to or end in thedirection ofmo eme'ut of the frames and haying a plurality of faces eachprorided with a' series of abutments spaced difierently longitudinallyof the member from the abutments on another face, a stop on the otherframe cooperating with the different series of abutments, selectively,aeeording to the position of the member in its seat and a kicker fordisplacing the memher laterally from the seat comprising a lever havingone arm projecting from the frame and the other arranged in the bottomof the seat to rise against the member when the first is operated.

3. In a multiplying hack for cameras, the

combination with two relatively movable f'anies arranged face to faceand havinga position in rear of the camera, one of which is adapted tohave applied thereto the sen eitized medium, of a guide strip on theface ot one frame having an outwardly turned flange, a guide on theadjacent race of the other to receive said flange and a flange on saidlast mentioned frame engaging he neath the guide strip.

WVlZLLlAh/l F. FOLE'EER, Witnesses RUSSELL B; Gnirri'rri, FLORENCE E.Frauen,

